One night, her husband invites a colleague over. As the evening wears on, the conversation continues, but eventually the husband succumbs to drunkenness and collapses, falling asleep on the living room sofa. In the quiet room, Reiko finally confesses her long-hidden frustrations about their sexless marriage. The colleague responds by admitting, "I've actually had feelings for you," and suddenly pulls her into a passionate kiss. Shaken by his warmth and overwhelmed by the taboo thrill of her husband lying nearby, Reiko hesitates. But her uncontrollable desire soon takes over, and she ultimately surrenders herself completely.